Usain Bolt: a life in pictures

Despite making significant technical and psychological strides under Mills, there was disappointment in Helsinki for Bolt, when an injury saw him jog home in the final, but - at just 18 years of age - there was much yet to come from the sprinter.

Mills and Norman Peart (Bolt's manager) encouraged him to apply himself to the 400m, believing him well-suited to the event, but he was adamant that his future lay in the shorter sprints.